java.util.logging.ErrorManager: 4: Unable to create [c:pache-tomcat-7.0.30 -Dcatalina.home=c:pache-tomcat-7.0.30\logs\]
I was getting this error recently, and found that it was caused by having a trailing backslash on my CATALINA_HOME variable.
i.e.
Incorrect:
set CATALINA_HOME=c:pache-tomcat-7.0.30\
Correct:
set CATALINA_HOME=c:pache-tomcat-7.0.30